
or

execute your query
JavaScript:
USE AdventureWorks
GO
SELECT CustomerID, Name, SalesPersonID, ModifiedDate
FROM Sales.Store
WHERE (Name='Bike World' AND ModifiedDate > '2004-10-01')
GO
If dbase needs an INDEX, will appear this 'Missing Index' green line.

Right click > Missing Index Details

This will generate T-SQL code for the missing index (SQL Server 2008 Management Studio).
JavaScript:
USE [AdventureWorks]
GO
CREATE NONCLUSTERED INDEX []
ON [Sales].[Store] ([Name],[ModifiedDate])
GO
name the INDEX name
JavaScript:
CREATE NONCLUSTERED INDEX [IDX_Store_Mod_Date]
#create #index #missing
src - https://www.mssqltips.com/sqlservertip/1945/missing-index-feature-of-sql-server-2008-management-studio/